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Message-Id: <1540401136-78500-1-git-send-email-peng.hao2@zte.com.cn>
Date: Thu, 25 Oct 2018 01:12:13 +0800
From: Peng Hao <peng.hao2@....com.cn>
To: robh+dt@...nel.org, mark.rutland@....com, arnd@...db.de,
gregkh@...uxfoundation.org, andy@...radead.org,
dvhart@...radead.org
Cc: linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org,
hutao@...fujitsu.com, Peng Hao <peng.hao2@....com.cn>
Subject: [PATCH V2 1/4] misc/pvpanic: move pvpanic to misc as common driver
move pvpanic.c from drivers/platform/x86 to drivers/misc.
following patches will use pvpanic device in arm64.
Signed-off-by: Peng Hao <peng.hao2@....com.cn>
---
drivers/misc/Kconfig | 7 +++
drivers/misc/Makefile | 1 +
drivers/misc/pvpanic.c | 124 +++++++++++++++++++++++++++++++++++++++++
drivers/platform/Kconfig | 3 +
drivers/platform/Makefile | 1 +
drivers/platform/x86/Kconfig | 8 ---
drivers/platform/x86/Makefile | 1 -
drivers/platform/x86/pvpanic.c | 124 -----------------------------------------
8 files changed, 136 insertions(+), 133 deletions(-)
create mode 100644 drivers/misc/pvpanic.c
delete mode 100644 drivers/platform/x86/pvpanic.c
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 5d71300..ca55c94 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -499,6 +499,13 @@ config MISC_RTSX
tristate
default MISC_RTSX_PCI || MISC_RTSX_USB
+config PVPANIC
+ tristate "pvpanic device support"
+ help
+ This driver provides support for the pvpanic device. pvpanic is
+ a paravirtualized device provided by QEMU; it lets a virtual machine
+ (guest) communicate panic events to the host.
+
source "drivers/misc/c2port/Kconfig"
source "drivers/misc/eeprom/Kconfig"
source "drivers/misc/cb710/Kconfig"
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index 20be70c..39dc005 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -57,3 +57,4 @@ obj-$(CONFIG_ASPEED_LPC_SNOOP) += aspeed-lpc-snoop.o
obj-$(CONFIG_PCI_ENDPOINT_TEST) += pci_endpoint_test.o
obj-$(CONFIG_OCXL) += ocxl/
obj-$(CONFIG_MISC_RTSX) += cardreader/
+obj-$(CONFIG_PVPANIC) += pvpanic.o
diff --git a/drivers/misc/pvpanic.c b/drivers/misc/pvpanic.c
new file mode 100644
index 0000000..fd86dab
--- /dev/null
+++ b/drivers/misc/pvpanic.c
@@ -0,0 +1,124 @@
+/*
+ * pvpanic.c - pvpanic Device Support
+ *
+ * Copyright (C) 2013 Fujitsu.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/acpi.h>
+
+MODULE_AUTHOR("Hu Tao <hutao@...fujitsu.com>");
+MODULE_DESCRIPTION("pvpanic device driver");
+MODULE_LICENSE("GPL");
+
+static int pvpanic_add(struct acpi_device *device);
+static int pvpanic_remove(struct acpi_device *device);
+
+static const struct acpi_device_id pvpanic_device_ids[] = {
+ { "QEMU0001", 0 },
+ { "", 0 },
+};
+MODULE_DEVICE_TABLE(acpi, pvpanic_device_ids);
+
+#define PVPANIC_PANICKED (1 << 0)
+
+static u16 port;
+
+static struct acpi_driver pvpanic_driver = {
+ .name = "pvpanic",
+ .class = "QEMU",
+ .ids = pvpanic_device_ids,
+ .ops = {
+ .add = pvpanic_add,
+ .remove = pvpanic_remove,
+ },
+ .owner = THIS_MODULE,
+};
+
+static void
+pvpanic_send_event(unsigned int event)
+{
+ outb(event, port);
+}
+
+static int
+pvpanic_panic_notify(struct notifier_block *nb, unsigned long code,
+ void *unused)
+{
+ pvpanic_send_event(PVPANIC_PANICKED);
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block pvpanic_panic_nb = {
+ .notifier_call = pvpanic_panic_notify,
+ .priority = 1, /* let this called before broken drm_fb_helper */
+};
+
+
+static acpi_status
+pvpanic_walk_resources(struct acpi_resource *res, void *context)
+{
+ switch (res->type) {
+ case ACPI_RESOURCE_TYPE_END_TAG:
+ return AE_OK;
+
+ case ACPI_RESOURCE_TYPE_IO:
+ port = res->data.io.minimum;
+ return AE_OK;
+
+ default:
+ return AE_ERROR;
+ }
+}
+
+static int pvpanic_add(struct acpi_device *device)
+{
+ int ret;
+
+ ret = acpi_bus_get_status(device);
+ if (ret < 0)
+ return ret;
+
+ if (!device->status.enabled || !device->status.functional)
+ return -ENODEV;
+
+ acpi_walk_resources(device->handle, METHOD_NAME__CRS,
+ pvpanic_walk_resources, NULL);
+
+ if (!port)
+ return -ENODEV;
+
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &pvpanic_panic_nb);
+
+ return 0;
+}
+
+static int pvpanic_remove(struct acpi_device *device)
+{
+
+ atomic_notifier_chain_unregister(&panic_notifier_list,
+ &pvpanic_panic_nb);
+ return 0;
+}
+
+module_acpi_driver(pvpanic_driver);
diff --git a/drivers/platform/Kconfig b/drivers/platform/Kconfig
index d4c2e42..8b64b78 100644
--- a/drivers/platform/Kconfig
+++ b/drivers/platform/Kconfig
@@ -1,3 +1,6 @@
+if ARM64
+source "drivers/platform/arm/Kconfig"
+endif
if X86
source "drivers/platform/x86/Kconfig"
endif
diff --git a/drivers/platform/Makefile b/drivers/platform/Makefile
index 4b2ce58..232231c 100644
--- a/drivers/platform/Makefile
+++ b/drivers/platform/Makefile
@@ -3,6 +3,7 @@
# Makefile for linux/drivers/platform
#
+obj-$(CONFIG_ARM64) += arm/
obj-$(CONFIG_X86) += x86/
obj-$(CONFIG_MELLANOX_PLATFORM) += mellanox/
obj-$(CONFIG_MIPS) += mips/
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index ef016e4..a6b412e 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -1119,14 +1119,6 @@ config INTEL_SMARTCONNECT
This driver checks to determine whether the device has Intel Smart
Connect enabled, and if so disables it.
-config PVPANIC
- tristate "pvpanic device support"
- depends on ACPI
- ---help---
- This driver provides support for the pvpanic device. pvpanic is
- a paravirtualized device provided by QEMU; it lets a virtual machine
- (guest) communicate panic events to the host.
-
config INTEL_PMC_IPC
tristate "Intel PMC IPC Driver"
depends on ACPI
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 2ba6cb7..a4ec299 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -75,7 +75,6 @@ obj-$(CONFIG_APPLE_GMUX) += apple-gmux.o
obj-$(CONFIG_INTEL_RST) += intel-rst.o
obj-$(CONFIG_INTEL_SMARTCONNECT) += intel-smartconnect.o
-obj-$(CONFIG_PVPANIC) += pvpanic.o
obj-$(CONFIG_ALIENWARE_WMI) += alienware-wmi.o
obj-$(CONFIG_INTEL_PMC_IPC) += intel_pmc_ipc.o
obj-$(CONFIG_SILEAD_DMI) += silead_dmi.o
diff --git a/drivers/platform/x86/pvpanic.c b/drivers/platform/x86/pvpanic.c
deleted file mode 100644
index fd86dab..0000000
--- a/drivers/platform/x86/pvpanic.c
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * pvpanic.c - pvpanic Device Support
- *
- * Copyright (C) 2013 Fujitsu.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/acpi.h>
-
-MODULE_AUTHOR("Hu Tao <hutao@...fujitsu.com>");
-MODULE_DESCRIPTION("pvpanic device driver");
-MODULE_LICENSE("GPL");
-
-static int pvpanic_add(struct acpi_device *device);
-static int pvpanic_remove(struct acpi_device *device);
-
-static const struct acpi_device_id pvpanic_device_ids[] = {
- { "QEMU0001", 0 },
- { "", 0 },
-};
-MODULE_DEVICE_TABLE(acpi, pvpanic_device_ids);
-
-#define PVPANIC_PANICKED (1 << 0)
-
-static u16 port;
-
-static struct acpi_driver pvpanic_driver = {
- .name = "pvpanic",
- .class = "QEMU",
- .ids = pvpanic_device_ids,
- .ops = {
- .add = pvpanic_add,
- .remove = pvpanic_remove,
- },
- .owner = THIS_MODULE,
-};
-
-static void
-pvpanic_send_event(unsigned int event)
-{
- outb(event, port);
-}
-
-static int
-pvpanic_panic_notify(struct notifier_block *nb, unsigned long code,
- void *unused)
-{
- pvpanic_send_event(PVPANIC_PANICKED);
- return NOTIFY_DONE;
-}
-
-static struct notifier_block pvpanic_panic_nb = {
- .notifier_call = pvpanic_panic_notify,
- .priority = 1, /* let this called before broken drm_fb_helper */
-};
-
-
-static acpi_status
-pvpanic_walk_resources(struct acpi_resource *res, void *context)
-{
- switch (res->type) {
- case ACPI_RESOURCE_TYPE_END_TAG:
- return AE_OK;
-
- case ACPI_RESOURCE_TYPE_IO:
- port = res->data.io.minimum;
- return AE_OK;
-
- default:
- return AE_ERROR;
- }
-}
-
-static int pvpanic_add(struct acpi_device *device)
-{
- int ret;
-
- ret = acpi_bus_get_status(device);
- if (ret < 0)
- return ret;
-
- if (!device->status.enabled || !device->status.functional)
- return -ENODEV;
-
- acpi_walk_resources(device->handle, METHOD_NAME__CRS,
- pvpanic_walk_resources, NULL);
-
- if (!port)
- return -ENODEV;
-
- atomic_notifier_chain_register(&panic_notifier_list,
- &pvpanic_panic_nb);
-
- return 0;
-}
-
-static int pvpanic_remove(struct acpi_device *device)
-{
-
- atomic_notifier_chain_unregister(&panic_notifier_list,
- &pvpanic_panic_nb);
- return 0;
-}
-
-module_acpi_driver(pvpanic_driver);
--
1.8.3.1
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